Jacob cokson



JACOB. foonsoNQoF* CLINTON, NEW JERSEY.

Letters Patent No.` 74,313, dated Febrttary 11, 1868.

IMPROVEMENT IN enAINsIrvr.

dln ,briganti referat trv utlgttt Entert wat tutti mating ,nrt nf the tame.

To' ALL WHoM' 1r MAY ooNoEnN:v

Be it known that I, JACOB CORSON,of Clinton, in thecou'nty of Hunterdon, and State of. New Jersey, have invented a new and improvedGrain-Sieve; and I do herebyr declare that the following is a full, clear, and exact descriptionrthereof, which willenable those skilled in the art' to make and use the same, reference being had to o the accompanying drawings, forming part of this specification, in which- 4liggrre'l represents a longitudinal vertical section of my improved grain-sieve.

Figure 2 is a vertical transverse section vof the same.

Figure 3 is a side elevation of the same. I Y

Similar letters of reference indicate corresponding parts.

This invention relates to a new gravin-sieve, which is so arranged that the grain may be most thoroughly separated from dust and dirt, and that the small gra'iu'may also be separated from thelarge grain.` 4

The invention consists in the general arrangement of the sieves, wherebythe desviredi'esult is obtained;

alsoin the manner of securinothe box that contains lthe sieves to a stationary frame, and of combining it with suitable springs, so that a shaking motion can be imparted to it by hand.

A, vin the drawing, represents a box, of suitable size and material, hinged by means of four, ormore or less,

' arms "B4 B, to a pedestal, C, and provided with handles D D, as shown. From thepedestal project stift` springs i E E, which t with their free upper ends `between lugs d a, that are arranged on the sides of the box A, as is clearly shown in iig. 3. The springs E have the tendency to remain straight, and to thereby 'keep the box A in a certain position. By moving the box by'the handle D, a shaking motion will be imparted to it and its coentents. Within the box A are arranged a. number of sieves, F G H, in zigzag line, as shown in fig. 1. Below the upper' sievcs are arranged inclined boards I J, as shown, the same being about parallel with the sieves above them. The sieves are hinged to the boXAat their upper or lower ends, so` that their incline may bevat-lcd at I pleasure, to cause the grain to move faster or slower over them, as may be'desired.- By means of pins iitting .into `set-holes arranged in the box A, the free ends of the sieves are supported in the required elevation. The

grain to be sifted is thrown upon an inclined' board, K, whenceit falls upon' thev `ilpper sieve F. 'Moving down -on* the same, the'dust anddirt fall through the meshes of the sieve upon the board I, by which they are discharged from the box, while the grain falls over the lower edge of Vthe sieve F, upon'the upper part of the sieve G. `On the sieveG the grain nieves down, whileimpurities fall through the sieve upon the board'J into `a chamber, L, formed above the same. 'From the chamber L such impurities can onlyb'e removed by taking out a slideM, arranged at the end of the box A, as is clearly shown in iig. Il..v The grain falls from the sieve G upon the sieve H, by which the coarse grain is separated from the fine. The coarse grain is discharged from the lower end of the sieve H, while the iine passes through the sieve into a suitable receptacle below the same.

I claim as new, and desire to secure by Letters Patent- 1. A grain-sieve, consisting of the combination of the adjustable sievcs F G H with the boardsI and J, all made and operating substantially ns herein shown and described. i

2, The above in cdmbination with the slide` M, made asset forth.

3; The arrangement of the arms B, springs E E, and lugs a a for connectingY the box A, containing the sievcs, with the pedestal C, so that Aa. shaking motion can be easily imparted to the boxj A by hand yor otherwise,

as set forth.

JACOB CORSON.

Witnesses: e

B.. Duexwonrn, Gao; Gomez. 

